Abstract: This paper deals with all the micromammal fossils other than those of dipodids (Wang & Qiu, 2000). They are sampled from the red mudstone of the Lower Member (lower red mudstone) of the Xianshuihe Formaüon. They were found in Xiagou (GL 9513), Shangxigou (GL 9601) in the middle part of the lower red mudstone and Qujiachuan (9707, 9712) in the lower part of the lower red mudstone. Most of the fossils were collected by screening washing.

摘要： 兰州盆地咸水河组下红泥岩共产有15属25种哺乳动物化石。位于下红泥岩中部的峡沟和上西沟等地产有11属20种化石(Amphechinus cf. A. rectus, A. cf. A. minimus, Amphechinus sp., Soricidae indet., Sinolagomys kansuensis, S. cf. S. major, Yindirtemys grangeri, Y. xiningensis, Y. ambiguus, Eucricetodon sp., Tachyory